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Finding the Fourth Proportional to 8,353.87, 12,519.87 and 3,417.88

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Solution

The fourth proportional to 8,353.87, 12,519.87 and 3,417.88 is: 5,122.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,353.87 : 12,519.87 = 3,417.88 : x
  2. Step 2: Convert to fraction form
    8,353.87/12,519.87 = 3,417.88/x
  3. Step 3: Cross multiply
    8,353.87x = 12,519.87 × 3,417.88
  4. Step 4: Simplify right side
    8,353.87x = 42,791,413.28
  5. Step 5: Solve for x
    x = 42,791,413.28/8,353.87
  6. Step 6: Final answer
    x = 5,122.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.